Portable negative pressure apparatus



FIG. 1 is a front perspective view of a portable negative pressure apparatus showing our new design.

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a left side view thereof; and,

FIG. 8 is a right side view thereof.

In the drawings, the dashed broken lines denote portions of the portable negative pressure apparatus that form no part of the claimed design. The solid black surface shading in FIGS. 1, 3, and 5 is used to represent color contrast. 

CLAIM The ornamental design for a portable negative pressure apparatus, as shown and described. 